@book { IKB,
    title = "IKB",
    subtitle = "Eine politökonomische Analyse",
    author = "Dominik {Schöneberger}",
    year = "2008",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836617963",
    url = "https://m.diplom.de/document/226069"
}